Sydney's wet weather boosts fungi growth

While the wet weather has left Sydneysiders cabin-crazy indoors, fungi and mushrooms are soaking up every single drop of rain.

Sydney has been hit with more than 265 millimetres of rain this month, more than double the average March rainfall, with all but four days clouded by wet weather, according to the Bureau of Meteorology.

"The thunderstorms that we have had have brought quite a lot of precipitation but it is not uncommon for March to have over 200 millimetres on average," Emily McVeigh from the BoM told AAP.

The moist climate, coupled with lower temperatures has been the perfect nurturing tool for a variety of mushroom species, which need four days of rain before "fruiting".

"It is true that at the moment after all this heavy rain we are getting all these fruitings of many different fungi or mushrooms," Chairman of the Sydney Fungal Studies Group Ray Kearney said.

"There are groups of fungi, very colourful ones, which will fruit when the temperature drops below 18 degrees."

"We are not seeing any of those now but later in Autumn and in the middle of winter that is when the family will begin to fruit."